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JPA EntityManager: Why use persist() over merge()?
EntityManager.merge() can insert new objects and update existing ones.
15 Answers
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What happens if you don't commit a transaction to a database (say, SQL Server)?
Suppose I have a query:
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Why is printing to stdout so slow? Can it be sped up?
I've always been amazed/frustrated with how long it takes to simply output to the terminal with a print statement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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Difference between open and codecs.open in Python
There are two ways to open a text file in Python:
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Replace a newline in TSQL
I would like to replace (or remove) a newline character in a TSQL-string.
Any Ideas?
12 Answers
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Is there a better Windows Console Window? [closed]
I find working on the command line in Windows frustrating, primarily because the console window is wretched to use compared to terminal applications on linux and OS X such as "rxvt", "xterm", or "Terminal". Major complaints:
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How to apply a patch generated with git format-patch?
I have 2 git local repositories both pointing to the same remote repository.
6 Answers
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How are everyday machines programmed?
How are everyday machines (not so much computers and mobile devices as appliances, digital watches, etc) programmed? What kind of code goes into the programming of a Coca-Cola vending machine? How does my coffee maker accept a pre-programmed time and begin brewing a pot of coffee hours later, when t...
Error in Swift class: Property not initialized at super.init call
I have two classes, Shape and Square
12 Answers
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How can I run code on a background thread on Android?
I want some code to run in the background continuously. I don't want to do it in a service. Is there any other way possible?
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